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Concrete Abstractions

Concrete Abstractions by Hailperin, Kaiser and Knight

by Hailperin, Kaiser and Knight

Shares rank 25 of 28 computer science textbooks by recommenders

People recommend it as a gentle, self-contained route into foundational computer science and Scheme exercises, and as preparation for SICP.

People recommend it as a gentle, self-contained route into foundational computer science and Scheme exercises, and as preparation for SICP.

2 people gave an opinion

recommend it
2
criticize it
0
approval share
100%
Each figure is one person. RecommendsCriticizes

Recommended in 3 of 13 months

  1. November 2025: not recommended
  2. December 2025: not recommended
  3. January 2026: recommended
  4. February 2026: not recommended
  5. March 2026: not recommended
  6. April 2026: recommended
  7. May 2026: recommended
  8. June 2026: not recommended
  9. July 2026: not recommended
  10. August 2026: not recommended
  11. September 2026: not recommended
  12. October 2026: not recommended
  13. November 2026: not recommended (month in progress)

Why it doesn’t carry the badge

  • 2 people recommend itNeeds 10 or more, not met.
  • Nobody criticizes itNeeds 2 to 1 or better, met.
  • Recommended in 3 of 13 monthsNeeds 4 or more, not met.

The same three rules apply to every product, and the badge can’t be bought. How the badge works

Other computer science textbooks people recommend

The four most recommended other computer science textbooks, with the same counts for each, so you can compare like for like. The tick on each bar marks the 2 to 1 line the badge needs.

Concrete Abstractions by Hailperin, Kaiser and Knight compared with 4 alternatives
ProductRecommendCriticizeApprovalMonthsOwnedBadge
Structure and Interpretation of Computer Programsby Abelson and Sussman55592%12—Approved
The Art of Computer Programmingby Donald E. Knuth28682%10—Approved
Structure and Interpretation of Computer Programsby Abelson and Sussman120100%9—Approved
Quantum Computation and Quantum Informationby Nielsen and Chuang120100%3——
Concrete Abstractionsby Hailperin, Kaiser and KnightThis page20100%3——
See all 28 computer science textbooks, ranked

What people said

All 5 comments that mention it, newest first. Each links to the original comment.

“The books you mention deal with "Software Abstractions"”

MixedComment from 2 May 2026 in “A Letter from Dijkstra on APL”

“"Concrete Abstractions" for the novice making it ready for SICP”

RecommendsComment from 2 May 2026 in “A Letter from Dijkstra on APL”

“Pick any, CACS, SS, it doesn't matter, both will guide you”

RecommendsComment from 19 Apr 2026 in “The seven programming ur-languages”

“If you do these, you already understood most of the grounds of CS”

RecommendsComment from 9 Jan 2026 in “Mathematics for Computer Science (2018) [pdf]”

“s9fes can be a good enough Scheme Lisp to complete the exircies Concrete Abstractions”

RecommendsComment from 6 Jan 2026 in “Raspberry Pi and mini PC home lab prices hit parity as DRAM costs skyrocket”

Counts come from 1,795,640 Hacker News comments, November 2025 to November 2026. How we count. Report a mistake.